Antibiotic growth promoter exposure reshapes gut microbiome ecology and physiological responses in Thai native chickens
An experiment in 80 Thai native crossbred chickens compared a basal diet with 0.05% chlortetracycline for 12 weeks. Growth, ADG, and FCR did not improve, while LDL and AST rose, intestinal histology changed, and cecal microbiota shifted toward a pattern interpreted as dysbiosis.